Sash lock



Ju e 16, 1925..

M. w. VWRAGG SASH LOCK Filed Sept. 20, 1924 A TTOR/VE rs WIWESSES/VJ aw 7 Patented June 16, 1925.

UNITED STATES 1,542,754 PATENT OFFICE.

MATTHEW WILLIAM WRAGG, or AKRON, OHIO.

SASH LOCK.

Application filed September- 20, 1924. Serial No. 738,869.

exact description.

This invention relates to fastening devices and has particular reference to a window sash lock, the outstanding object of which is to provide an improved means for automatically locking a window sash in a partially open position for admitting air to the.

room, and which further serves to prevent a furtheropening ofthe same to allow the entrance of a person from the exterior.

The invention furthermore comprehends a sash locking device of the character set forth, which is extremely simple in its construction and mode of operation, which is inexpensive to manufacture and install, and which is thoroughly reliable and highly efficient in its purpose.

lVith the above recitedandother objects in view, the invention resides in the novel construction set forth in the following specification, particularly pointed out in the appended claim and illustrated in the accompanying drawings, it being understood that the right is reserved to embodiments other than those actually illustrated herein to the full extent indicated by the general meaning of the terms in which the claim is expressed.

In the drawings Figure 1 is a perspective view of the sash lock removed from the window.

Fig. 2 is a fragmentary horizontal sectional view showing the device in applied position.

Fig. 3 is a fragmentary vertical sectional view through a window equipped with a sash lock constructed in accordance with the invention and illustrating the normal position of the same when the sash is closed.

Fig. 4 is a similar view with the lock in operative position for locking the sash in partially open position.

Fig. 5 is a similar view with the locking device thrown to a position to permit of fu 1 opening of the sash.

Referrin to the drawings by characters of reference, designates a window frame, B the lower sash mounted therein for vertical movement and including an upper meeting rail G and a side rail D. The looking device constituting the invention and which is pivotally attached to the retaining and guide molding E of the window frame, comprises a body 10 having a substantially semicircular attaching lug 11 through which a fastening screw or other device 12 is inserted, said screw being an chored in the retaining and guide strip E. The body 10 is provided respectively with an outwardly projecting arm 13 and a down wardly projecting arm 14 having right angularly disposed faces 15 and 16. The arm 14 is further provided with an eccentric or cam face 17. A weighted arm 18 extends inwardly and is provided at its free end with a ball-shaped terminal 19 constituting means for gravitationally swinging the member 10 to the position illustrated in Fig.

3. In this position the eccentric cam face 17 engages the inner upper corner of the meeting rail O and serves to lock the sash B in fully closed position. When it is desired to lockthe sash B in a partially open or raised position as illustrated in Fig. 4, the member is swung inwardly until the face 16 of the arm 14 is disposed in the same plane as the inner face of the sash B. This arrangement disposes the arm 13 in a position to intersect the path of movement of the upper rail G of the window frame so that the upper surface of the meeting rail C engages the face 15 of the arm 13 and thereby presents a further opening of the sash B from the exterior, while admitting fresh air to enter the room. As lllustrated in Fig. 5, the member 10 is manipulated to a position to swing the arm 13 inwardly so that the sash B is free to: be moved to a fully open position. The weighted arm 18 serves to normally throw the locking member 10 to a position when the window is fully closed for retaining the same against opening from the exterior.

From the foregoing it will thus be seen that an extremely simple, yet highly effective sash locking device has been devised which permits of the locking of a window sash in a partially open position and against further opening from the exterior. It will be further noted that the device is easily installed and operates as an automatic means for locking the sash in fully closed position.

I claim: .j I

A device of the character described comprising a pivoted member carried by one side of the Window frame, said member having an apertured semicircular lug, an attaching and pivoted member eXtendm-g therethrongh and anchored in the frame, a-

pair of right angularly disposed armspresenting respectively engaging faces for cooperation with the upper face of the meeting rail and the inner face thereof to lock the sash in a partially open position. against further opening from the exterior, one of saidarms having an eccentric cam face, and a Weighted arm projecting inwardly from saidmember for swinging said member to a position to engage the cam face With the upper inner edge of the meeting rail of the; sash to automatically retain the sash in fully closed position.

MATTHEW lVILLIAM VRAGG. 

